B&M electronic shift improver
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New User
Joined: Dec 2001
Posts: 19
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From: baton rouge usa
B&M electronic shift improver
I have a 98 Expedition and purchased a $40 electronic shift improver from jcwhitney.In the catalog it said that it fits 94-97 F series,Exp,etc. with the 4R70W,AODE,& E4OD trans but when i got it and opened the package it stated that it only fit E40D trans up to 1997.Which is true?If i hook it to my ECU will it mess things up? I have confirmed I have the 4R70W trans. HELP!!!!
Senior User
Joined: Aug 2001
Posts: 387
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From: MCBH Kaneohe Bay, HI
B&M electronic shift improver
I'd make absolutely sure that its for your type of tranny. Other trannies are different and it prolly wouldn't work and could mess stuff up. summit racing sells a programmable shift improver that you can set up to modify shift points and firmness. That might be useful for towing or other heavy duty use or racing (i wouldnt be racin no expedition). Hope this helps.
Fleet Owner
Joined: Jun 1999
Posts: 24,552
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From: Creedmoor, North Carolina
B&M electronic shift improver
Mike, Am I missing something here, You stated that the catalog says for 94-97 and the part says for 97, yet you posted that you own a 98.
scratching my head
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John
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John
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In the cool still quiet of night, you can hear chevies rusting away.
Post Fiend
Joined: Feb 2001
Posts: 6,624
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From: Missouri
B&M electronic shift improver
I think John has a pretty good point on this one here. It obviously is not for your vehicle. I know that the E40D has had many updates done to it since its birth. I'm sure its the same story with the 4R70W.
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